Been in a relationship with a girl for 8 years. Have had our ups and downs like anyone else. Been planning on getting engaged soona nd she knew that. Not making excuses but I have been under financial pressure and I have been mistreating her verball. I sensed that she was talking to a guy at work(due to her behavior) so I told her if she was going to be running around she shouldn't do it while living with me. Things blew up and she left our apt. After she left I asked her if we were still togehter and she said yes that she just needed time to herself. While she was gone she was still paying rent coming over for sex. While she was gone I worked on myself and decided never to be do her wrong again. She comes back a month or so after she leaves we start working things out and she sees the changes in behaviorm. I ask her if she went out and did anything cause I sensed it she said nothing happened. After about a month of her being back I look through her phone and come to find out that she hung out with this guy(who has a girlfriend) and they ended up making out. Find out she was s texting and flirting with him after coming back to me but nothing happened after she returned. Says that she thought we were over and that his attention was nice and that she should of stopped texting him after she came back. I have stayed with her so far and still plan to marry her any advice?